mirror of
https://github.com/idanoo/GoScrobble.git
synced 2024-11-24 09:25:15 +00:00
68 lines
1.9 KiB
TypeScript
68 lines
1.9 KiB
TypeScript
declare namespace pMap {
|
|
interface Options {
|
|
/**
|
|
Number of concurrently pending promises returned by `mapper`.
|
|
|
|
Must be an integer from 1 and up or `Infinity`.
|
|
|
|
@default Infinity
|
|
*/
|
|
readonly concurrency?: number;
|
|
|
|
/**
|
|
When set to `false`, instead of stopping when a promise rejects, it will wait for all the promises to settle and then reject with an [aggregated error](https://github.com/sindresorhus/aggregate-error) containing all the errors from the rejected promises.
|
|
|
|
@default true
|
|
*/
|
|
readonly stopOnError?: boolean;
|
|
}
|
|
|
|
/**
|
|
Function which is called for every item in `input`. Expected to return a `Promise` or value.
|
|
|
|
@param element - Iterated element.
|
|
@param index - Index of the element in the source array.
|
|
*/
|
|
type Mapper<Element = any, NewElement = unknown> = (
|
|
element: Element,
|
|
index: number
|
|
) => NewElement | Promise<NewElement>;
|
|
}
|
|
|
|
/**
|
|
@param input - Iterated over concurrently in the `mapper` function.
|
|
@param mapper - Function which is called for every item in `input`. Expected to return a `Promise` or value.
|
|
@returns A `Promise` that is fulfilled when all promises in `input` and ones returned from `mapper` are fulfilled, or rejects if any of the promises reject. The fulfilled value is an `Array` of the fulfilled values returned from `mapper` in `input` order.
|
|
|
|
@example
|
|
```
|
|
import pMap = require('p-map');
|
|
import got = require('got');
|
|
|
|
const sites = [
|
|
getWebsiteFromUsername('https://sindresorhus'), //=> Promise
|
|
'https://ava.li',
|
|
'https://github.com'
|
|
];
|
|
|
|
(async () => {
|
|
const mapper = async site => {
|
|
const {requestUrl} = await got.head(site);
|
|
return requestUrl;
|
|
};
|
|
|
|
const result = await pMap(sites, mapper, {concurrency: 2});
|
|
|
|
console.log(result);
|
|
//=> ['https://sindresorhus.com/', 'https://ava.li/', 'https://github.com/']
|
|
})();
|
|
```
|
|
*/
|
|
declare function pMap<Element, NewElement>(
|
|
input: Iterable<Element>,
|
|
mapper: pMap.Mapper<Element, NewElement>,
|
|
options?: pMap.Options
|
|
): Promise<NewElement[]>;
|
|
|
|
export = pMap;
|